Circuit-breaker.



Dec, 10, M8.

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s: llana-ih :.-lmwn in@ l 3 D..- w n n u u n w. m non mn mi@ u 'pum 1iaforesaid, and connected in any usual manner in the circuit ot theapparatus to be controlled. Said contact lingers are disposed atopposite sides ot the axial orifice of the bushing 15C and in the pathot' the above mentioned sliding contact bar to have electrical contacttherewith and close the circuit therethrough when said contact bar is inits outer position.

1G designates a sliding contact bar above referred to havingmovement inthe aforesaid axial guide oritice otl the bushing 1t and adapted whenmoved to the right in the drawing to have contact with both terminals 1515 aforesaid, and close the electric circuit. between the same.

17 designates a spring' having engagement with an outward extension'lorstem 18 ot the contact bar 16 and adapted to move and hold the same in anormal position out. ot contact with the terminals 15, 15 aforesaid. Inthe construction shown in Figs. 2 and 3, the said spring 17 and the stem1S ot' the contact bar 16 are arranged within a casing 1D carried by thepush button no w to be described.

2O designates a push but-ton slidingly arranged in the aforesaidbushing` 1'2 and in alined relation to the contact bar 16 aforesaid, and21 designates a spring individual to said push button and adapted tomove and yieldingly hold said push button to and at a position normallyto the lett. in the drawing'. ln the construction shown, the aforesaidContact bar lo is capable ot' movement to the lett to break the contactot the electric circuit independent ot the push button. through theinstrun'ientality otl its individual actuatingy spring1 1T aforesaid,so' that friction due. to its sliding contact is the sole impedance toits Jfree movement, and in consequence its action in connection with theassociated latch bolt; mechanism hereinatter described, is verysensitive.

designates a notch or recess formed in the side of the Contact bar 1Gand adapted tor engagement, with a latch bolt hereinafter dcscribed andso that the Contact bar lil will be held in a contacting positionbetween the terminals 15, 1o until the holdingengagement ot said latchbolty with the contact bar lo is released.

designates the latch bolt above roterred to, having` a sliding movement,in an `oritice lormed therefor in the inner bushing and with it-s innerend resting' upon and operatively engaged by the lower abutment collar 7heretofore described.

E25 designates a spring associated with the rock leve-r 24e and adaptedto move the same in a direction to engage the associated latch bolt withthe sliding Contact bar 1li atoii'- said.

lith the present mechanism, the operator by pushing the push button 2Oinwardly moves the contact bar 16 between the terminals 15, 15 to closethe circuit between the same. and the contact. bar 1G is held in suchposition by the automatic engagement ot the latch bolt with the notch ofthe said contact bar. Such condition ot' the mechanism will prevailuntil such times as a predetermined high pressure is attained in, thecompressed air apparatuswitli which the present mechanism is associated.`With the attainment ot such pressure the pistou diaphragm 3 is forcedupward and through the lower abutment collar 7 and rock lever 2l; causesthe latch bolt 23 to move out ot' engagement with the notch 22 of theContact bar 1G, leaving the same free to be moved by its springr 17 outot' its contacting' engagement with the terminals 15, 15 and thus causea break in the circuit ot the operating electric motor of the compressedair apparatus.

Having thusl fully described my said invention, what l claim as new anddesire to secure by Lette 's Patent, is 1- 1. Tn an automatic circuitcontrolling mechanism ot the type herein described7 the combination ot aSupportingv bracket, a motor casingassociated with said bracket andcomprising' a pair of cup shape sections and a` piston diaphragmdisposed between said sect-ions and adapted to be moved in one directionby pneumatic pressure, a lguide stem ixedly associated with saidcasing'. an adjustable abutment on the upper end ot said stem. a movableabutment collar on the lower portion of said stem, a springr interposedbetween said abutments and adapted to impart movement t0 the pistondiaphragm -in a direction opposite to that ellected by pneumaticpressure, a head having bearing' on the piston diaphragm and operativelyconnected to the aforesaid movable abutment collar b) a plurality ot'Studs passing' through the motor casing, a rock lever operativelyassociated with said movable abutment collar, and a self openinglcircuit breaking' mechanism having a latching;f means operativelyconnected to said roeklever, substantially as set. forth.

2. i'n an automatic' circuit controlling mechanism ot' the type hereindescribed, the coinbiiuition of a support-ing bracket, a motor easingassociated with said bracket and comprising a. pair of cup shapesections and a piston diaphragm disposed between said sodi-ous andadupod to he moved iu one direction by oneuumtio pressure, u ruido tomiiiedly associated with Suid casing, uu adjustable abutmentcolhir on houpper @ud oi' said siem, u. movable abutment collur on lhe lower portionof Suid Stomp means for ei'- ec'tiug uu udjuSment of said collar, uSpring; associated with the aforesaid collars und uduped lo impartmovement to the Vafore-fziid Violon diaphragm in a direction Opposite tothat eil'crlrd oy pneumatic pressure, u head having hearing' on thepison diaphragm mid operatively comiccied to the movable abutment colhirby a plurality of Studs passing hroug'h the motor casing, a rock-leveroperaively associated with Suid movable :ibutf mont Collar, und :iself-opening circuit lx1-raking' mechanism having :i lutchiug menusoperatively connected to said rocklevcr, substantially as set forth. v

Signed at Chic-ago, lliuois, this 7th day of June, 1917.

ORNE. H. TORGERSEN.

